Generation of Spin Defects in Hexagonal Boron Nitride
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-07-06 |
| Journal | ACS Photonics |
| Authors | Mehran Kianinia, Simon White, Johannes E. Frƶch, Carlo Bradac, Igor Aharonovich |
| Institutions | University of Technology Sydney, ARC Centre of Excellence for Transformative Meta-Optical Systems |
| Citations | 131 |
Abstract
Section titled āAbstractāTwo-dimensional hexagonal boron nitride offers intriguing opportunities for advanced studies of light-matter interaction at the nanoscale, specifically for realizations in quantum nanophotonics. Here, we demonstrate the generation of optically addressable spin defects based on the negatively charged boron vacancy (VB-) center. We show that these centers can be created in exfoliated hexagonal boron nitride using a variety of focused ion beams (nitrogen, xenon, and argon). Using a combination of laser and resonant microwave excitation, we carry out optically detected magnetic resonance spectroscopy measurements, which reveal a zero-field ground state splitting for the defect of ā¼3.46 GHz. We also perform photoluminescence excitation spectroscopy and temperature-dependent photoluminescence measurements to elucidate the photophysical properties of the VB- centers. Our results are important for advanced quantum and nanophotonics realizations involving manipulation and readout of spin defects in hexagonal boron nitride.